A.X-Y鍵 B.P-B鍵 C.混合鍵 D.中間值鍵
A.以順動(dòng)的為準(zhǔn) B.以逆動(dòng)的為準(zhǔn) C.以占優(yōu)勢(shì)的光帶為準(zhǔn) D.以不占優(yōu)勢(shì)的光帶為準(zhǔn)
A.9~10mm B.10~11mm C.11~12mm D.12~13mm